Gologic Time Scale- McCray

By mccrayk14
  • Precambian Time 4600 MYA

    Precambian Time 4600 MYA

    The earth formed from planetary nubula. Oldest age0 dated rocks on earth. Fossile algae and stormatolites (prokaryotes)> Fossil evidence of bacteria. Fossile evidence of cells with a nucleus (eukartotes). First multi-celled organisms (seaweed and algea). Oldest marine worms and jellyfish.
  • Period: to

    Geologic Time Scale in One Calendar Year

  • Teritary period 65 MYA

    Teritary period 65 MYA

    first ancestors of dogs and cats 65 MYA grasses become widspread- 60 MYA first amcestors of pigs and deer. 57 MYA first horses 55 MYA first anacestors of rabbits 45 MYA first monkeys 39 MYA oldest human like ancestors (hominids) 4 MYA
  • Origin of life (first cells) 3900 MYA.

    Origin of life (first cells) 3900 MYA.

    300 MILLION YEARS AGO.
  • Prokaryotes 3600 MYA

    Prokaryotes 3600 MYA

  • Eukaryotes 2100 MYA

  • Paloezic era 544 MYA

    Paloezic era 544 MYA

  • Cambrian period 544 MYA

    Cambrian period 544 MYA

    Burgess shale animals. Animals with a notochord,

  • Ordovician period 544 MYA

    Fisrt fish and fossile evidence of land plants,
  • Silurian period 438 MYA

    Silurian period 438 MYA

    First vascular land plants. Oldest lung fish fossils.

  • Devoniam period 408 MYA

    Oldest fossil evidence of mosses. First insects. First lobe-finned fish. First land animals. First sharks. First seed plants.

  • Mississippian period 360 MYA

    first possible reptiles.
  • Pennsyvanian period

    Pennsyvanian period

    Permian system begins. Snail backed reptiles (dimetrodon) end of palezoic. 90% of all life on earth perishes.

  • Mesozoic Era "The Age of Reptiles" 254 MYA

  • Triassic Period 245 MYA

    Triassic Period 245 MYA

    Frist crocodiles first dinosaurs first mammals (shrew like) first turtles
  • Jurassic Period 208 MYA

    Jurassic Period 208 MYA

    first flowering plants duck billed dinosaurs, Protoceratops. Triceratops. Tryannosaurus rex. Velociraptor. End of mesozoic, probaly meteor or comet impact.
  • Creatceouse period 144 MYA

    Creatceouse period 144 MYA

    fIRST FLOWERING PLANTS. dUCK BILLED DINOSAURS. pROTOCERATOPS. tRICERATOPS. tRYANNAOSURUS REX. vELOCIAPTOR. eND OF MESOZOIC, PROBALY METEOR OR COMET IMPACT.
  • Cenozoic era- the age of mammals 65 MYA

    Cenozoic era- the age of mammals 65 MYA

  • Quaternary period 2 MYA

    Quaternary period 2 MYA

    first of 4 ice ages. 1 MYA. First modern man, homo sapiens- 0.1 MYA. Mammoth and mastodon bones- 0.05 MYA. Revolutionary war 235 years ago/ World war 2 70 years ago